Good news! I am finally getting it! I reviewed a webpage I had viewed before. The example on the page was for an older version of Unity, but someone had converted it to the new version, and provided a GitHub example.
Here
is the link and look for Jamessa's post.

The project uses a second orthographic camera to capture the background image. I don't understand what makes the second camera draw, though. I thought Unity just drew one camera or the other. Now I need to try generating the image instead of using one from file.

This is one tough navy, boy. They don't give you time off, even for being dead. -Clay

Now, doesn't this look better? I will work on getting it to move with the camera, among other things, before submitting the files. Also, I had to divide the result of my algorithm by ninety to get it to look like stars. Everything was so extreme before, that it appeared to be black and white.

This is one tough navy, boy. They don't give you time off, even for being dead. -Clay